81023940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19571}}^1$

素因数の和:19609

約数の個数: 72

約数和(自身を含む): 256471488

約数和(自身を除く): 175447548

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 19571, 39142, 58713, 78284, 97855, 117426, 176139, 195710, 234852, 293565, 352278, 391420, 450133, 587130, 704556, 880695, 900266, 1174260, 1350399, 1761390, 1800532, 2250665, 2700798, 3522780, 4051197, 4501330, 5401596, 6751995, 8102394, 9002660, 13503990, 16204788, 20255985, 27007980, 40511970, 81023940]

約数ペア:

[(1, 81023940), (2, 40511970), (3, 27007980), (4, 20255985), (5, 16204788), (6, 13503990), (9, 9002660), (10, 8102394), (12, 6751995), (15, 5401596), (18, 4501330), (20, 4051197), (23, 3522780), (30, 2700798), (36, 2250665), (45, 1800532), (46, 1761390), (60, 1350399), (69, 1174260), (90, 900266), (92, 880695), (115, 704556), (138, 587130), (180, 450133), (207, 391420), (230, 352278), (276, 293565), (345, 234852), (414, 195710), (460, 176139), (690, 117426), (828, 97855), (1035, 78284), (1380, 58713), (2070, 39142), (4140, 19571)]